The GOA has started a five part YT series on its findings from their FOIA request to the ATF RE: the National Tracing Center handling of 4473s from out of business (and other) FFLs:
You can read the full report here (you will be required to give your name and ZIP code to download the report.) ATF’s Illegal Gun Registry 101 | Gun Owners of America
You can read the full report here (you will be required to give your name and ZIP code to download the report.) ATF’s Illegal Gun Registry 101 | Gun Owners of America